The name comes from the very early days of development when it was known as the DirectXBox because it would run their API.K12 said:... you could have just not used a number guys. XBox Neo, ZBox, MBox, XBox Prime, XBox Alpha, XBox Elite, OmegaBox/ ΩBox, XLBox, XXBox, XtraBox, neXtBox, XBox Revelations, XBox: Enemy Unknown, XBox with a vengeance, XBox: Wrath of Khan... or you know just a totally different unrelated name.